Nimbus-7 SMMR Polar Gridded Radiances and Sea Ice Concentrations

Arctic and Antarctic data provides gridded brightness temperatures and sea ice concentrations for both polar regions. The dataset contains measurements from the Nimbus-7 Scanning Multichannel Microwave Radiometer (SMMR) instrument. Grid elements are 25 x 25 km in a polar stereographic projection.

Use Cases

• Analyzing sea ice concentration trends over time using the gridded concentration data.
• Studying microwave brightness temperature variations across the Arctic and Antarctic.
• Validating climate and sea ice models with historical satellite-derived polar observations.
• Mapping polar ice extent and concentration changes on a 25 km grid.

Strengths

• Provides data for both the Arctic and Antarctic polar regions.
• Features a consistent 25 x 25 km grid resolution in polar stereographic projection.
• Originates from the authoritative NASA organization.

Limitations

• Conflicting last updated dates exist between sources (1987-08-20 vs. 2026-03 12).
• Specific row counts, file sizes, and column names are not provided by any source.
• License is ambiguously listed as 'other-license-specified' without clear terms.

Provenance

Source

National Aeronautics and Space Administration (NASA)

Collection Method

Satellite measurements from the Nimbus-7 Scanning Multichannel Microwave Radiometer (SMMR) instrument.

Time Range

null

Freshness

2026-03-12 23:19:20.438504

Geography

Arctic and Antarctic polar regions.